1102920121 has 4 divisors (see below), whose sum is σ = 1105800192. Its totient is φ = 1100040052.

The previous prime is 1102920109. The next prime is 1102920211. The reversal of 1102920121 is 1210292011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1102920121 - 2¹¹ = 1102918073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102990121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439461 + ... + 1440226.

It is an arithmetic number, because the mean of its divisors is an integer number (276450048).

Almost surely, 2^1102920121 is an apocalyptic number.

It is an amenable number.

1102920121 is a deficient number, since it is larger than the sum of its proper divisors (2880071).

1102920121 is an equidigital number, since it uses as much as digits as its factorization.

1102920121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880070.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1102920121 is about 33210.2412065917. The cubic root of 1102920121 is about 1033.1927576950.

The spelling of 1102920121 in words is "one billion, one hundred two million, nine hundred twenty thousand, one hundred twenty-one".